In what cases are interlayer adhesives used?

1- In products of packaging films made of several polymers

such as food packaging in order to preserve and maintain high shelf life and create properties such as barrier (impermeable to gases, oxygen and moisture)

In this type of packaging that we have discussed in the section of specialized wrappers on this website, plastic with multi-layer devices

Due to the incompatibility of polyolefinic polar layers (pe, pp) with other non-polar layers such as (EVOH-PA-PET polymer) during the co-extrusion process, interlayer adhesives are used to create adhesion to this layer. are used through creating chemical bonds with polar materials and physical interactions as well as adhesive penetration in the polyolefinic chain.

2- In products of packaging tubes:

In these products, several layers of polymer, aluminum foil and paper are designed and made, and the incompatibility between different layers is eliminated through interlayer glue.

3- Bottles for storing food such as (sauce and ketchup) in this product according to the shape with inter-layer glue reach proper compatibility and adhesion.

4-Paper bottles for packing milk and liquids (such as tetrapacks)

5-Food packaging (such as chocolate packaging)